CN105383250A - Torsion beam suspension - Google Patents
Torsion beam suspension Download PDFInfo
- Publication number
- CN105383250A CN105383250A CN201510557561.6A CN201510557561A CN105383250A CN 105383250 A CN105383250 A CN 105383250A CN 201510557561 A CN201510557561 A CN 201510557561A CN 105383250 A CN105383250 A CN 105383250A
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- China
- Prior art keywords
- torsion beam
- swing arm
- junction surface
- twist
- outstanding edge
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/051—Trailing arm twist beam axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/20—Semi-rigid axle suspensions
- B60G2200/23—Trailing arms connected by a U-shaped torsion bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/20—Constructional features of semi-rigid axles, e.g. twist beam type axles
- B60G2206/202—Constructional features of semi-rigid axles, e.g. twist beam type axles with a radially deformed tube as a cross member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/82—Joining
- B60G2206/8201—Joining by welding
Abstract
The invention provides a torsion beam suspension capable of easy positioning between a torsion beam and rear swing arms, in particular positioning in the direction of rotation. The torsion beam suspension comprises a torsion beam having at least two end portions in the longitudinal direction, the two end portions having bending portions bent in a cross direction with the longitudinal direction, with two end edge portions of the bending portions forming protruding edge portions protruding in a cross direction with the longitudinal direction; and a pair of rear swing arms having beam engaging portions for engaging the bending portions at the two end portions of the torsion beam in an overlapping manner, with the final end portions of the beam engaging portions forming protruding edge portions identical to the protruding edge portions of the torsion beam. The rear swing arms include a first engaging portion for engaging top ends of the bending portions of the torsion beam when the rear swing arms overlap the bending portions of the torsion beam; and a second engaging portion for engaging end faces in an axial direction of protruding edge portions of the rear swing arms with end faces in an axial direction of the protruding edge portions of the torsion beam with respect to the end faces.
Description
Technical field
The present invention relates to a kind of torsion beam and utilize welded joint in the twist-beam suspension of a pair rear-swing arm of each end of torsion beam of comprising.
Background technology
In recent years, for the object promoting the performance of automobile in fuel oil consumption, advance to make body lightening and calorize is carried out to running gear parts.
Twist-beam suspension as running gear parts comprises torsion beam and utilizes welded joint in a pair rear-swing arm of each end of torsion beam.Rear-swing arm is required to have higher rigidity for transverse force, fore-and-aft direction power, above-below direction power.On the other hand, torsion beam is required to have appropriate rigidity to bear left and right wheels with the roll loads of phase jitter contrary up and down (Japanese: ロ ー Le loading).
Patent Document 1 discloses a kind of twist-beam suspension, increase to avoid weight and relax the stress produced at the edge part of torsion beam, this twist-beam suspension is configured to torsion beam to be inserted in rear-swing arm.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2012-140031
Summary of the invention
the problem that invention will solve
But, in the twist-beam suspension of patent documentation 1, there is following problem.
I the end winding support of () torsion beam and rear-swing arm only side, particularly location are in a rotational direction comparatively difficult.
(ii) torsion beam butts up against the end of rear-swing arm, but such as from vehicle body when side engagement torsion beam and rear-swing arm, cannot confirm whether docking location be aimed at while engage docking section with eyes.
The object of the present invention is to provide a kind of twist-beam suspension that easily can carry out location between torsion beam and rear-swing arm, particularly easily can to carry out between torsion beam and rear-swing arm location in a rotational direction.
for the scheme of dealing with problems
The present invention is in order to solve above-mentioned problem, a kind of twist-beam suspension is provided, this twist-beam suspension comprises: torsion beam, this torsion beam has both ends at least in the longitudinal direction, these both ends have curve bending crisscross with length direction, and are formed with outstanding edge outstanding crisscross with length direction at two end edge portions of this curve; And rear-swing arm, this rear-swing arm is a pair, there is the beam junction surface curve at the both ends of this torsion beam overlap linked, the outstanding edge identical with the projected direction of the outstanding edge of described torsion beam is formed at the terminal part at this beam junction surface, this rear-swing arm comprises: the first junction surface, and this first junction surface is used for the curve top engaging described torsion beam when swing arm is superimposed with the curve of described torsion beam in the rear; And second junction surface, the end face of this second junction surface on the axis direction of the described outstanding edge by this rear-swing arm with relative to the end face on the axis direction of the described outstanding edge of the described torsion beam of this end face to stitch bond.
the effect of invention
Adopt the present invention, following effect can be played.
The present invention comprises the first junction surface and the second junction surface, this first junction surface is used for the curve top engaging described torsion beam when rear-swing arm is superimposed with the curve of described torsion beam, the end face of this second junction surface on the axis direction of the described outstanding edge by this rear-swing arm with relative to the end face on the axis direction of the described outstanding edge of the described torsion beam of this end face to stitch bond, therefore, it is possible to suppress the rotation between torsion beam and rear-swing arm.Due to the end face on the axis direction of the outstanding edge of torsion beam and the outstanding edge of rear-swing arm is joined together, therefore, it is possible to realize the location on axis direction.
Accompanying drawing explanation
Fig. 1 is the block diagram of the vehicle representing the twist-beam suspension applying the 1st embodiment of the present invention.
Fig. 2 is the block diagram being arranged on the twist-beam suspension on wheel representing the 1st embodiment of the present invention.
Fig. 3 is represent the 1st embodiment of the present invention exploded perspective view being arranged on the twist-beam suspension on wheel with decomposing.
Fig. 4 is the block diagram of the rear-swing arm of the twist-beam suspension representing the 1st embodiment of the present invention.
Fig. 5 represents the birds-eye view obtained from the connector portions between the torsion beam and rear-swing arm of the twist-beam suspension of top view the 1st embodiment of the present invention.
Fig. 6 is the A-A line cutaway view of Fig. 5.
Fig. 7 is the B-B line cutaway view of Fig. 5.
Fig. 8 is the block diagram at the junction surface of connector portions between the torsion beam of the twist-beam suspension representing the 1st embodiment of the present invention and rear-swing arm.
Fig. 9 represents the cross sectional shape of torsion beam, (a) of Fig. 9 is the schematic diagram representing roughly letter C cross-sectional profile, (b) of Fig. 9 is the schematic diagram representing roughly V-arrangement cross sectional shape, and (c) of Fig. 9 is the schematic diagram representing roughly U-shaped cross sectional shape.
Figure 10 is the schematic isometric of the connector portions between the torsion beam of the twist-beam suspension representing the 1st embodiment of the present invention and rear-swing arm.
(a) of Figure 11 is the C-C line cutaway view of Figure 10, and (b) of Figure 11 is the D-D line cutaway view of Figure 10.
Figure 12 is the longitudinal section of the connector portions between the torsion beam of the twist-beam suspension representing the 2nd embodiment of the present invention and rear-swing arm.
Figure 13 represents the schematic diagram with the hole of the rear-swing arm of Figure 12 opposition side.
Figure 14 is the schematic diagram of the position relationship represented between torsion beam and noise silencer.
description of reference numerals
1, vehicle; 2, twist-beam suspension; 3, wheel; 4, vehicle body; 5, torsion beam; 6, rear-swing arm; 7, spring; 8, shock absorber; 13, blank area; 6a, beam junction surface; 51, recessed bar portion; 52, curve; 53,69, outstanding edge; 53a, 69a, end face; 65, top; 66, inclined plane part; 67, recess; 67a, wall portion; 68A, 68B, open pore.
Detailed description of the invention
Below, the accompanying drawing with reference to Fig. 1 ~ Fig. 8 explains embodiments of the present invention.
Fig. 1 represents the vehicle of the twist-beam suspension of application embodiments of the present invention, Fig. 2 and Fig. 3 is the block diagram of the 1st embodiment representing twist-beam suspension.
In FIG, Reference numeral 1 possesses the vehicle of twist-beam suspension 2 as rear suspension.Vehicle 1 is suspended on vehicle body 4 by the wheel 3 of twist-beam suspension 2 by left and right.
As shown in Figures 2 and 3, twist-beam suspension 2 comprises the torsion beam 5 of the lengthwise arranged along vehicle-width direction and is linked to a pair rear-swing arm 6 at torsion beam 5 two ends.Spring 7 and shock absorber 8 to be arranged on rear-swing arm 6 thus to hang on vehicle body 4.
As shown in Fig. 4 ~ Fig. 8, described rear-swing arm 6 is the parts of the casting adopting the nonferrous alloy such as aluminum alloy, and it is formed as the closed section shape of hollow structure.This rear-swing arm 6 at one end has the beam junction surface 6a that extends along vehicle-width direction as connector portions, is provided with forearm 6b and postbrachium 6c that the fore-and-aft direction along vehicle body extends in another side of this beam junction surface 6a.
Described forearm 6b is provided with the lining press-in portion 61 that press-in has the tubular liner as elastic component, and this lining press-in portion 61 can swingingly be arranged on cantilever shalving 9 by bolt of rear end plate 10, and this cantilever shalving 9 is arranged on vehicle body 4.In the rear arm 6c is provided with support 62 towards the outside of vehicle body, the bight place inside the vehicle-width direction between beam junction surface 6a and postbrachium 6c is provided with spring perch 63 and shock absorber installation portion 64.Described support 62 is installed wheel hub (Japanese: Ha Block) 11 and brake wheel 12, the mode supporting wheel 3 that can rotate with wheel 3.The lower end of the spring 7 that spring perch 63 pairs of upper ends are arranged on vehicle body 4 is supported, and it is provided with mounting hole 63a on seat board face.In addition, as the countermeasure of answering counter stress to concentrate, be set to from support 62 and lining press-in portion 61 to beam junction surface 6a and R is obtained larger shape.
Described rear-swing arm 6 is formed as the cross section roughly square tube shape extended along vehicle-width direction, the inclined plane part 66 lower face side being formed as inclined-plane from top 65 outside vehicle-width direction is set to beam junction surface 6a by it, and this beam junction surface 6a is as the blank area 13 between rear-swing arm 6 and described torsion beam 5.
As shown in Figure 7, if the line extended along its length of the lower end of torsion beam 5 is set to datum line BL, then this inclined plane part 66 tilts relative to this datum line BL, namely tilts to the direction leaving described torsion beam 5 lower end upward.That is, this inclined plane part 66 to be convexly curved along the length direction of torsion beam 5 relative to datum line BL as shown in Figure 7 to be formed.
This inclined plane part 66 becomes the beam junction surface 6a as described blank area 13, and its mode attenuated slightly with the wall portions of beam junction surface 6a is formed in recess 67, between inclined plane part 66 and torsion beam 5 internal face, be formed with gap described later.As shown in Figure 6, open pore 68A is formed with at described inclined plane part 66.For the sloping portion being provided with described inclined plane part 66 of the blank area 13 of described rear-swing arm 6, compared with the part by open side, the part by non-open side is arranged on the vehicle body center side on the length direction of described torsion beam 5.
As shown in Figure 5, the cardinal extremity that locking engaging portion, i.e. wall portion 67a are provided in described beam junction surface 6a is carried out to the top of described torsion beam 5, the direction surface thereof expanded towards vehicle front when overlooking.Described rear-swing arm 6 is on roughly same with torsion beam 5 under being formed as the state being assembled with torsion beam 5 on the 6a of beam junction surface.
When overlooking, rear-swing arm 6 is formed obliquely the length direction both ends in torsion beam 5 along the wall portion 67a as engaging portion that the beam junction surface 6a at rear-swing arm 6 is arranged.
Described torsion beam 5 is bent to the direction intersected with length direction by tabular component, and form the formed products being alongst opened on the lengthwise of the roughly letter U shape in the recessed bar portion 51 of lower surface.This torsion beam 5 is formed by the drawing product of aluminum extruded material or aluminium sheet, as (a) of Fig. 9, (b) of Fig. 9, Fig. 9 (c) shown in, the cross section at a right angle with axis direction of beam is formed as the open cross-sections of roughly letter C shape, alphabetical V-arrangement, letter U shape.Described torsion beam 5 also can by forming notch part at the lower surface of the pipe of tubulose and being formed along its length.
Described torsion beam 5 is formed to the outstanding edge 53 outstanding with the direction that length direction intersects in the edges at two ends portion of curve 52.The terminal part being provided with wall portion 67a of the beam junction surface 6a of swing arm 6 is provided with to outstanding outstanding edge 69, the same direction, outstanding edge 53 with described torsion beam 5 in the rear.
As shown in Figure 10 and Figure 11, configure the beam junction surface 6a being assembled with described rear-swing arm 6 overlappingly in the both ends curve inner surface side of described torsion beam 5, the complete cycle except the peristome of lower face side of described torsion beam 5 is welded in the beam junction surface 6a of rear-swing arm 6.For the weld between described torsion beam 5 and beam junction surface 6a, using welding (w1) as the wall portion 67a of engaging portion along wall portion 67a near the recess 67 of the beam junction surface 6a of edge, the top 5a of described torsion beam 5 and described rear-swing arm 6, and, the wall 5b in the recessed bar portion 51 of edge, the top 65a of beam junction surface 6a and torsion beam 5 is welded (w3).The end face 69a of the end face 53a of the outstanding edge 53 of described torsion beam 5 and the outstanding edge 69 of described rear-swing arm 6 in the axial direction toward each other, realizes location by being abutted mutually by end face 53a and end face 69a.The outstanding edge 53 of described torsion beam 5 and the outstanding edge 69 of described rear-swing arm 6 make opposite face each other dock mutually thus carry out welding (w2).As the weld between described rear-swing arm 6 and the top ends of described torsion beam 5, weld w1 between the wall portion 67a of edge, the top 5a of described torsion beam 5 and the beam junction surface 6a of described rear-swing arm 6 becomes the first junction surface, and the weld w2 between the outstanding edge 53 of torsion beam 5 and the outstanding edge 69 of described rear-swing arm 6 becomes the second junction surface.Length L2 on the projected direction of the length L1 on the projected direction of the outstanding edge 69 of described rear-swing arm 6 and the outstanding edge 53 of torsion beam 5 is formed as roughly the same, i.e. L1=L2.In addition, the thickness m2 of the thickness m1 of the outstanding edge 69 of described rear-swing arm 6 and the outstanding edge 53 of torsion beam 5 be formed as roughly the same, i.e. m1=m2.Further, the length H2 in the short transverse from the non-open side of blank area 13 towards the length H1 the short transverse of open side and described torsion beam 5 of this rear-swing arm 6 is set to roughly the same, i.e. H1=H2.
Then, the load inputted to torsion beam 5 and constrained procedure are described.
As shown in Figure 2, the load inputted to torsion beam 5 has transverse force F1, fore-and-aft direction power F2, above-below direction power F3 and makes left and right tire with the roll loads of opposite phase displacement in the vertical direction for tire earth point.In addition, utilize at the bulged-in lining as elastic component in torsion beam 5 front, rotatably retrain, utilize spring 7 and shock absorber 8 to determine the upper-lower position of vehicle body 4.
The effect of above-mentioned 1st embodiment is described.
Carry out assembling to make the recessed bar portion 51 of torsion beam 5 cover rear-swing arm 6 beam junction surface 6a and by recessed bar portion 51 and beam junction surface 6a superimposed, and make the end face 53a on the axis direction of the outstanding edge 53 of torsion beam 5 be connected to the end face 69a of the outstanding edge 69 of rear-swing arm 6.
Be configured to the wall portion 67a of the 6a end, beam junction surface curve 52 top of torsion beam 5 being butted up against rear-swing arm 6.As shown in (a) of Figure 11, between the wall portion 67a and curve 52 top of torsion beam 5 of the 6a end, beam junction surface of rear-swing arm 6, be provided with gap g1.In addition, between the beam junction surface 6a and the wall of torsion beam 5 of rear-swing arm 6, gap g2 is also formed with.
Then, the wall portion 67a as engaging portion near the recess 67 of the beam junction surface 6a of edge, the top 5a of torsion beam 5 and rear-swing arm 6 is welded (w1).In addition, meanwhile, the internal face 5b of edge, the top 65a of beam junction surface 6a and the curve 52 of torsion beam 5 is welded (w3).So, the beam junction surface 6a of rear-swing arm 6 and the curve 52 of torsion beam 5 weld in two place's parts, therefore, it is possible to obtain enough rigidity.On the other hand, at the terminal part of the beam junction surface 6a of rear-swing arm 6, and be that the bottom of interrupting at edge, top 65a is provided with outstanding edge 69, therefore, be connected to the end face 69a of outstanding edge 69 by the end face 53a on the axis direction of the outstanding edge 53 of torsion beam 5 thus locking, location can be realized.Thus, be connected to the wall portion 67a of 6a end, beam junction surface of rear-swing arm 6 on curve 52 top of torsion beam 5 before, end face 53a on the axis direction of the outstanding edge 53 of torsion beam 5 is connected to the end face 69a of outstanding edge 69, between curve 52 top and wall portion 67a of torsion beam 5, form gap g1.
Then, the end face 53a of the end face 69a of the outstanding edge 69 of rear-swing arm 6 and the outstanding edge 53 of torsion beam 5 is docked and carries out welded joint (w2).
By being set to this connected structure, go the sectional area of rear-swing arm 6 to diminish gradually along with from rear-swing arm 6 towards torsion beam 5, therefore, the rigidity of rear-swing arm 6 side engagement portion reduces.Its result, can suppress the stiffness change sharply of rear-swing arm 6 and beam junction surface 6a, can realize relaxing stress and concentrate.Owing to making the above-below direction same length of rear-swing arm 6 and beam junction surface 6a, therefore, it is possible to suppress the stiffness change at junction surface, relax stress and concentrate.When have input above-below direction load to torsion beam 5, the stress produced at weld part and the beam junction surface 6a of vehicle front side can be made to concentrate separately, become the countermeasure that reply is damaged.
According to above-mentioned 1st embodiment, in the terminal part of the beam junction surface 6a of rear-swing arm 6, and be that the bottom of interrupting at edge, top 65a is provided with outstanding edge 69, therefore, be connected to the end face 69a of outstanding edge 69 by the end face 53a on the axis direction of the outstanding edge 53 of torsion beam 5 and locking, thus location can be realized.And, due to the outstanding edge 69 of rear-swing arm 6 and the outstanding edge 53 of torsion beam 5 are docked and are carried out welded joint, therefore, it is possible to realize the location on axis direction.
Because the length on the projected direction of the outstanding edge 69 of described rear-swing arm 6 and the outstanding edge 53 of described torsion beam 5 is set to roughly the same, i.e. L1=L2, therefore the stage portion between rear-swing arm 6 and torsion beam 5 disappears, therefore, it is possible to the stress relaxing weld part is concentrated.Easily carry out rear-swing arm 6 and the contraposition of torsion beam 5 on vehicle body above-below direction.
Owing to the thickness of the outstanding edge 69 of described rear-swing arm 6 and the outstanding edge 53 of described torsion beam 5 to be set as roughly the same, i.e. m1=m2, the stage portion therefore between rear-swing arm 6 and torsion beam 5 disappears, therefore, it is possible to the stress relaxing weld part is concentrated.
The datum line BL extended relative to the length direction along described torsion beam 5 due to the blank area 13 between described rear-swing arm 6 and described torsion beam 5 tilts, therefore, it is possible to extend junction surface, and it is concentrated to relax stress.
For the sloping portion of the blank area 13 of described rear-swing arm 6, compared with the part leaning on open side of this sloping portion, the part by non-open side of this sloping portion is arranged on the vehicle body center side on the length direction of described torsion beam 5, therefore, stiffness change sharply can be suppressed, stress can be relaxed and concentrate.
Owing to by the length setting in the short transverse from the non-open side of blank area 13 towards the length the short transverse of open side and described torsion beam 5 of described rear-swing arm 6 being roughly the same, i.e. H1=H2, therefore, stiffness change sharply can be suppressed, stress can be relaxed and concentrate.Owing to junction surface can be welded on complete cycle, therefore can not produce the boundary between weld part and non-weld part, concentrate therefore, it is possible to relax stress.
Due near described first junction surface, be provided with gap g2 between described rear-swing arm 6 and described torsion beam 5, therefore, weld time produce gas be easy to escape from, can suppress produce rack of fusion.Also abnormal noise can be prevented when being out of shape at applied load.
Owing to being provided with gap g1 between the wall portion 67a as engaging portion and the end face 5a of described torsion beam 5 of described first junction surface, described rear-swing arm 6, therefore, the gas produced when welding is easy to escape from, and can suppress to produce rack of fusion.
Owing to being welded by complete cycle between the wall portion 67a as engaging portion of described first junction surface, described rear-swing arm 6 and the end face 5a of described torsion beam 5, the boundary between weld part and non-weld part disappears, and concentrates therefore, it is possible to relax stress.
Owing to being soldered around the edge, top of the connector portions of described rear-swing arm 6 and between the inner wall of described torsion beam 5, therefore, the end face 5a of torsion beam 5 can not only be engaged, also can engage the top ends of rear-swing arm 6, therefore, it is possible to have the joint of both direction.
By reducing the stiffness change of the junction surface w3 of swing arm rearward 6 end side between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6, the stress that can relax junction surface is concentrated.
In addition, by being engaged in the position that rigidity is higher by the junction surface w1 by torsion beam 5 end side between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6, the stress that can relax junction surface is concentrated.
Further, owing to the welding direction between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6 can be set to direction of tilt and this both direction of above-below direction, therefore, it is possible to the load of the direction of delaminate suppressing strength of joint more weak, strength of joint can be improved.
Because junction surface w1, w2, the w3 between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6 can carry out complete cycle welding, therefore, the boundary between weld part and non-weld part can not be produced, stress can be suppressed to concentrate.
Because junction surface w1, the w2 between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6 does not have diff-H at the outside face of torsion beam 5 radial direction, concentrate therefore, it is possible to relax stress.
Due to rear-swing arm 6 is set to hollow section, therefore, need core rod when casting, but by the rear-swing arm 6 side providing holes between torsion beam 5 and the beam junction surface 6a of rear-swing arm 6, core rod stably can be supported with the hole of cradle portion with 2 in this hole.
By the cross section of torsion beam 5 is set to open cross-sections, the vehicle not needing so high torsional rigid can be tackled.
Figure 12 and Figure 13 represents the connector portions between the torsion beam of the twist-beam suspension of the 2nd embodiment of the present invention and rear-swing arm, marks identical Reference numeral to the part identical with Fig. 7.
In the present embodiment, the recess 67 of the upper surface side of the beam junction surface 6a of rear-swing arm 6 is formed with open pore 68B.
At the end of the welding of complete cycle welding, gas can be made to escape from via this open pore 68B, improve the quality of weld part.Due to torsion beam 5 the area of the beam junction surface 6a of rear-swing arm 6 that is fitted together to diminish, therefore, it is possible to make torsion beam 5 lightweight, and, the possibility that rear-swing arm 6 contacts with torsion beam 5 when torsion beam 5 is out of shape becomes quite low, can suppress by contacting the abnormal noise caused.The size and shape of open pore 68B can be utilized to regulate the rigidity of fitting portion, thus stiffness change sharply can be suppressed.By utilizing open pore 68B to engage rear-swing arm 6 and torsion beam 5, junction surface can be strengthened.Two faces of torsion beam 5 contact with extraneous air, thus thermal diffusivity is improved, and can suppress the heat affecting configuring nigh noise silencer 14 as shown in Figure 14.
utilizability in industry
In addition, the present invention is not limited to above-mentioned embodiment, and the joint between rear-swing arm 6 and torsion beam 5 adopts FSW (friction stir joint) and do not adopt welding, thus the strength of material that can obtain weld part reduces the less good joint of degree.In addition, in the scope not changing technical scope of the present invention, suitably can change that to carry out enforcement be self-evident.
Claims (11)
1. a twist-beam suspension, is characterized in that,
This twist-beam suspension comprises:
Torsion beam, this torsion beam has both ends at least in the longitudinal direction, and these both ends have curve bending crisscross with length direction, and is formed with outstanding edge outstanding crisscross with length direction at two end edge portions of this curve; And
Rear-swing arm, this rear-swing arm is a pair, has the beam junction surface curve at the both ends of this torsion beam overlap linked, is formed with the outstanding edge identical with the projected direction of the outstanding edge of described torsion beam at the terminal part at this beam junction surface,
This rear-swing arm comprises:
First junction surface, this first junction surface is used for the curve top engaging described torsion beam when swing arm is superimposed with the curve of described torsion beam in the rear; And
Second junction surface, the end face of this second junction surface on the axis direction of the described outstanding edge by this rear-swing arm with relative to the end face on the axis direction of the described outstanding edge of the described torsion beam of this end face to stitch bond.
2. twist-beam suspension according to claim 1, is characterized in that,
The outstanding edge of described rear-swing arm and the same length of outstanding edge on projected direction of described torsion beam.
3. twist-beam suspension according to claim 1, is characterized in that,
The outstanding edge of described rear-swing arm is roughly the same with the thickness of the outstanding edge of described torsion beam.
4. the twist-beam suspension according to any one of claims 1 to 3, is characterized in that,
The datum line that blank area between described rear-swing arm and described torsion beam extends relative to the length direction along described torsion beam is skewed.
5. the twist-beam suspension according to any one of Claims 1 to 4, is characterized in that,
The non-open side part that the sloping portion of the blank area of described rear-swing arm is set to this sloping portion is positioned at the vehicle body center side on the length direction of described torsion beam compared with the part of the open side of this sloping portion.
6. the twist-beam suspension according to any one of Claims 1 to 5, is characterized in that,
Length setting in the short transverse from the non-open side of blank area towards the length the short transverse of open side and described torsion beam of described rear-swing arm is roughly the same.
7. the twist-beam suspension according to any one of claim 1 ~ 6, is characterized in that,
Near described first junction surface, be provided with gap between described rear-swing arm and described torsion beam.
8. the twist-beam suspension according to any one of claim 1 ~ 7, is characterized in that,
At described first junction surface place, between the wall portion as engaging portion of described rear-swing arm and the end face of described torsion beam, be provided with gap.
9. the twist-beam suspension according to any one of claim 1 ~ 8, is characterized in that,
Described first junction surface place, adopts all-round welding between the wall portion as engaging portion of described rear-swing arm and the end face of described torsion beam.
10. the twist-beam suspension according to any one of claim 1 ~ 9, is characterized in that,
By weld together between the wall of around the edge, top of the connector portions of described rear-swing arm and described torsion beam inside.
11. twist-beam suspensions according to any one of claim 1 ~ 10, is characterized in that,
The connector portions of swing arm is provided with open pore in the rear.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-178016 | 2014-09-02 | ||
| JP2014178016A JP6350914B2 (en) | 2014-09-02 | 2014-09-02 | Torsion beam suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105383250A true CN105383250A (en) | 2016-03-09 |
| CN105383250B CN105383250B (en) | 2017-12-12 |
Family
ID=55312404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510557561.6A Expired - Fee Related CN105383250B (en) | 2014-09-02 | 2015-09-02 | Twist-beam suspension |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6350914B2 (en) |
| CN (1) | CN105383250B (en) |
| DE (1) | DE102015114550A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6787017B2 (en) * | 2016-10-06 | 2020-11-18 | スズキ株式会社 | Torsion beam structure and torsion beam suspension |
| JP7162573B2 (en) * | 2019-07-02 | 2022-10-28 | 日本発條株式会社 | stabilizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724283A (en) * | 2004-07-21 | 2006-01-25 | 日产自动车株式会社 | Wheel suspension system |
| JP2012140031A (en) * | 2010-12-28 | 2012-07-26 | Toyota Motor Corp | Torsion beam type suspension |
| CN203186019U (en) * | 2013-01-29 | 2013-09-11 | 重庆天人汽车车身制造有限公司 | Car torsion beam rear shaft reinforced structure |
| CN203344685U (en) * | 2013-05-24 | 2013-12-18 | 上海汇众汽车制造有限公司 | Rear bridge girder of torsion beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127390U (en) * | 1981-01-29 | 1982-08-09 | ||
| JPS62275574A (en) * | 1986-05-22 | 1987-11-30 | Ishikawajima Harima Heavy Ind Co Ltd | One-side welding method with high quality |
| JPH0428713Y2 (en) * | 1986-11-10 | 1992-07-13 | ||
| CN103097152B (en) * | 2010-07-23 | 2015-08-05 | 本田技研工业株式会社 | Torsional beam type suspension device |
| JP2013256142A (en) * | 2012-06-11 | 2013-12-26 | Suzuki Motor Corp | Torsion beam joining structure of torsion beam type suspension |
-
2014
- 2014-09-02 JP JP2014178016A patent/JP6350914B2/en active Active
-
2015
- 2015-09-01 DE DE102015114550.2A patent/DE102015114550A1/en active Pending
- 2015-09-02 CN CN201510557561.6A patent/CN105383250B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724283A (en) * | 2004-07-21 | 2006-01-25 | 日产自动车株式会社 | Wheel suspension system |
| JP2012140031A (en) * | 2010-12-28 | 2012-07-26 | Toyota Motor Corp | Torsion beam type suspension |
| CN203186019U (en) * | 2013-01-29 | 2013-09-11 | 重庆天人汽车车身制造有限公司 | Car torsion beam rear shaft reinforced structure |
| CN203344685U (en) * | 2013-05-24 | 2013-12-18 | 上海汇众汽车制造有限公司 | Rear bridge girder of torsion beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105383250B (en) | 2017-12-12 |
| JP6350914B2 (en) | 2018-07-04 |
| DE102015114550A1 (en) | 2016-03-03 |
| JP2016049940A (en) | 2016-04-11 |
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